In addition to an anti-virus you also need a firewall of some type... be it ZonaAlarm or something else. If you have XP or Vista, both have built in firewalls if that is your choice.
Never run two firewalls at the same time... only one or there may be conflicts and unhappy results.
If I download Avast AV, (heard it's one of the best), do I also need to download an individual firewall eg, Zonealarm?
I intend to download Superantispyware as well.
Am I doing the right thing?
Am new to the download game but am slowly learning thanks to all the helpful advice so far received from everyone.